Question 1
Which region of the atmosphere contains the ozone layer?
◦ thermosphere
◦ mesosphere
◦ stratosphere
◦ troposphere
Question 2
Which statement about ozone and the ozone layer is true?
◦ Ozone is found in a band of almost pure ozone several kilometers thick encircling the Earth.
◦ The ozone in the ozone layer absorbs UV light between 200 and 300 nm.
◦ Ozone is a compound with the chemical formula CO
2.
◦ In the Earth's atmosphere, ozone exists only in the ozone layer.
◦ Ozone is used as a coolant in refrigerators and air conditioners.